Manhole, sewer-well, and catch-basin structure



April 27,1926. n 1,582,191

\ E. S. SNOOKE MANHOLE, SEWER WELL, AND CATCH BASIN STRUCTURE Filed sept. 4 1925 2 sheets-sheet 1 5" FIIE- l April 27 1926. 1,582,191

E. s. sNooKE MANHOLE SEWER WELL, AND CATCH BASIN STRUCTURE Filed Sept. 4, 1925 2 Sheets-Sheet 2 f f1 vez? for 'i d /Soo/fe y A n 4 3 l A Jf/o rwey Patented Apr. 27, 1926.

UNITED STATES" PATENT OFFICE.

ELEAZER S. SNOOKE, OF IBRXDGEPORT, CONNECTICUT. I

MANHOLE, 'SEWER-WELL, .AND CATCH-BASIN STRUCTURE.

'Application led September 4,.1925. Serial No. 54,434.

able others skilled in the art to which it appertains to make and use the same.

This invention relates to the construction of man holes for sewers, and has for its objects the elimination of the usual brick chamber formation, the provision of a sectional metallic structure which conforniably embraces the sewer pipes and rests upon a concrete base, the adaptation of said structure to different conditions merely by a change in the formation of the bottom section and the saving of large amounts of money to municipalities.

In the accompanying drawings which are to be read as a part of this application:

Figure l is a sectional elevation showing the improvement adapted to a straightaway sewer construction- Figure 2 a section at the line-2-2-of Figure 1 Figure 3 a section at the line 3 3 of y Figure 2- Figure 4 is a detail perspective of the bottom section such as is employed in the construction shown at Figure l, an additional concave portion being formed in this bottom section to accommodate the'construction shown at Figure 8-- Figure 5 is a section at the line 5 5 of Figure 1- Figure 6 is a plan view of the construction'shown at F igure l with the metallic casing sections removedm Figure 7 is a view similar to Figure 6 but showing a slightly different form of sewer construction-v Figure 8 is a view similar to Figure 6 but showing a construction in which one sewer intersects another- Figure 9 is a view similar to Figure S3v but showing a construction in Ywhich one sewer completely crosses another, and

Figure .10 is a view similar to Figure 8 showing a form of sewer construction in which the ends of the sewer pipes are disposed at angles to each other.

Similar numerals of reference denote like parts in the severaly gures of the drawing.

Referring to Figures 1, 2, 3, 5, and 6, this invention is shown adapted for one'of the simplest forms of sewer construction, inwhich a sewer line is broken at suitable intervals and man holes provided for the purpose of cleaning the sewer by the usual drag trawl means, A denoting the sewer trench and l, 2, the end pipes of the sewer separated by a space, usually about four feet, so that a workman mayhave room` for manipulation of the cleaning devices.

3 is a concrete formation at the bottom 'of the sewer trench which formation eX- tends beneath the pipes l, 2, and has a concave inner face a which serves as a continuation of the interiors of the pipes, so that ordinarily the 'low through the sewer will be continuous and uninterrupted, and this formation provides a base or foundation which yextends upwardly to a plane about midway of lthe height of the pipes.

The improved man hole structure is of metal and formed in sections that are cast or made of sheet metal, shaped and united or welded, and merely placed on top of each other, the bottom section conformably embracing the sewer pipes and resting on the foundation 3, while the top section is suitably shaped and provided with a cover, all of which will now be more particularly described. f

4 is the bottom section whose lower edge has concave portions 5, 6, which conform to the external surfaces of the pipes 1 and 2, while the intervening edges 7, 8, seat directly upon the foundation 3,'so that it will be c'lear that the broken sewer is completely housed by the foundation and this bottom section 4.

At the upper edge of this section 4 is an offset lip 9 so that the next section 10 may rest upon the section 4 and be retained in nosition by this lip, and succeeding sections 1l, 1 2, and 13, are placed in position in like manner and are retained in position by offset lips 14, 15, and 16, formed respectively on'the sections 1Q, 11, and 12.

The top section 13 has a conventional shape, being constricted at the upper end into a neck formation 17 within which is located the usual man hole cover B.

In the adaptation of the invention above described, the sewer pipes are in line, but when one sewer line intersects another, as

is illustrated at Figure 8, there is no change in the foundation except that it is built beneath the end pipe 18 of the intersecting Sewer and the bottom section 4 has formed in its lower edge another concave portion 19, as shown at Figure 4, in addition to the con'- cave portions 5, 6, so that this section may conformably embrace all three of the sewer pipe terminals and rest upon the foundation,

the latter having in its upper face a concave portion e leading from the pipe 18 into the concave portion a. y

In some instances'a sewer turns the corner ywhich is a very good place for the location of a manhole, and therefore at Figure 7 I have illustrated spaced pipes 20, 2l, the foundation being the same as above and having formed therein a concave inner face b which communicates respectively withisaid pipes, and the lower section' of thefoundation is formed with concave portions at suit- 'able localities just as above described, which portions snugly conform to said pipes so that the bottom edge of the lower section will fit upon-such foundation.

Sometimes a sewer will completely cross another sewer, las is shownat Figure 9, in

which instances the concrete-foundation will be builty beneath the spaced pipes l, 2, and

'22, 23, a general concaved inner face e being.

formed in "thefoundation and communicating with all four pipe ends, after the manner above described, and the bottom section 4 will have concavities f formed in its lower edge to conformably embrace all four pipes and the intervening edge portions of this section will rest upon .the foundation.

Should the pipes of three separate sewers come together ati angles to each other as shown at Figure 10, the foundation would be built beneath. these pipes 24, 25, and 2G,

tions in sewer construction.

In all municipalities sewers are laid at.

a stated depth so that the sewer pipes heretofore mentioned are at substantially the same level, but should there be any variation in the depth at which the pipes are laid this will make no difference with the'adaptation of the present improvement since it would merely mean that the foundation would be built somewhat higher for one or more of the pipes while the casting of the bottom section would be changed to correspond.

The advantages of this improvement are many, chief among which is the great saving to municipalities, and the lasting qualities of the sectional metallic casing as compared with the usual brick formation in the construction of man holes. Also, these sections are removable, either for the purpose of renewing one of them or for installing a new bottom section, or for other obvious purposes. t

The construction illustrated herein comprises ve sections, but any desired number of sections may be employed, and, in order to buildup a sectional man hole construction so that it will conform to the depth of the sewer with the-top section flush with the street surface, the sections are of dierent heights and it will always be possible to employ such sections as will be suitable.

Also, these sections being' of metal, any desired additional concave portions may be cut out from the bottom section, or from intermediate Sections.

In all instances the top section is preferably the same and is provided with the usual cover B.

This invention is applicable vto the construction of the sewer wellsusually located on the corners of streets to catch surfacel water, it being merely necessary to mount thc bottom section 4 on a foundation, and to lead the usual overow pipe into one of thel sections having a concavity cast therein to accommodate and conformably embrace said pipe.

What is claimed is A man hole structure -for sewers, composed of spaced sewer conduits, a foundation in the sewer trench enclosing the inner ends of the conduits and having its upper portion formed with depressions to receive said conduits, which depressions are of such depth t'o cause the upper portion of the foundation to be disposed substantially midway of the heights of the conduits, said upper portion of the foundation having troughlike portions which form continuations of the conduits, and a man hole casing seated at its lower end on the foundation and being formed with portions receiving the parts of the conduits which project above the said up er portion of the foundation.

n testimony `whereof I affix my signature hereto.

' ELEAZER lS. SNOOKE. 

